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._ <br />.............. <br />www.energylab.com Helena, MT 677-472-0711 • Billings MT 800-735-4489 - Casper, WY 888-235-0515 <br />r Aa WMExcellenceSinn 1632 J Gillette, WY 866-686-7175 a Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />- - <br />Report Date: 09/16/10 <br />Work Order: C10080658 <br />r <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: 27171 <br />Sample ID: MB-27171 6 Method Blank Run: ICPMS4-C_100826A 08/26/10 17:06 <br />Lead ND mg/L 5E-05 <br />Molybdenum 0.0005 mg/L 0.00010 <br />Silver ND mg/L 4E-05 <br />Thallium 0.001 mg/L 0.0001 <br />Uranium ND mg/L 4E-05 <br />Zinc 0.002 mg/L 0.001 <br />Sample ID: LCS3-27171 6 Laboratory Control Sample Run: ICPMS4-C_100826A 08/26/10 17:33 <br />Lead 0.541 mg/L 0.050 108 85 115 <br />Molybdenum 0.577 mg/L 0.10 115 85 115 <br />Silver 0.0545 mg/L 0.010 109 85 115 <br />Thallium 0.524 mg/L 0.10 105 85 115 <br />Uranium 0.553 mg/L 0.00030 111 85 115 <br />Zinc 0.548 mg/L 0.010 109 85 115 <br />Sample ID: C10080720-001AMS3 6 Sample Matrix Spike Run: ICPMS4-C_100826A 08/26/10 18:34 <br />Lead 0.521 mg/L 0,050 104 70 130 <br />Molybdenum 0.554 mg/L 0.10 111 70 130 <br />Silver 0.0521 mg/L 0.010 104 70 130 <br />Thallium 0.506 mg/L 0.10 101 70 130 <br />Uranium 0.538 mg/L 0.00030 108 70 130 <br />Zinc 0.523 mg/L 0.010 103 70 130 <br />Sample ID: C10080720-001AMSD 6 Sample Matrix Spike Duplicate Run: ICPMS4-C_100826A 08/26/10 18:41 <br />Lead 0.523 mg/L 0.050 105 70 130 0.5 20 <br />Molybdenum 0.564 mg/L 0.10 113 70 130 1.8 20 <br />Silver 0.0521 mg/L 0.010 104 70 130 0.1 20 <br />Thallium 0.510 mg/L 0.10 102 70 130 0.8 20 <br />Uranium 0.548 mg/L 0.00030 110 70 130 1.9 20 <br />Zinc 0.526 mg/L 0.010 103 70 130 0.5 20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 14 of 25